Portable battery pack apparatus and method of fabrication thereof
US5436089A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1993 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Aug 31, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49114
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery pack is provided for housing a plurality of fiat cells for portable electronic device applications. The battery pack is sufficiently thin to preserve the desirable thin profile of the fiat cells and yet exhibits surprising structural integrity considering the relatively thin polycarbonate material from which the housing of the pack is fabricated. A plurality of thin cells is laterally arranged side by side in spaced-apart relationship to form a cell subassembly. An adhesive is applied to a polycarbonate sheet. The sheet is then cut to a predetermined form and embossed to form creases along predetermined fold lines. The prepared sheet is then folded at the fold lines and positioned to substantially surround the cell subassembly and form a box-like structure around such subassembly. Adhesive on an upper sheet section adheres to the top planar surfaces of the fiat cells while adhesive on a lower sheet section adheres to the bottom planar surfaces of the flat cells. The upper and lower sheet sections formed by the boxlike folded sheet housing are substantially parallel with each other. In this member, the plurality of flat cells together with the parallel upper and lower shee…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.